Environmental studies :
Botkin, Daniel B.
Environmental studies : the Earth as a living planet / Daniel B. Botkin and Edward A. Keller. - Columbus : Charles E.Merrill Publishing Company, 1982. - ix, 506 p. : ill. ; 29 cm.
Includes bibliographies and index.
0-675-09813-0
Pollution--Environmental aspects.
Conservation of natural resources.
577.27 BOT
Environmental studies : the Earth as a living planet / Daniel B. Botkin and Edward A. Keller. - Columbus : Charles E.Merrill Publishing Company, 1982. - ix, 506 p. : ill. ; 29 cm.
Includes bibliographies and index.
0-675-09813-0
Pollution--Environmental aspects.
Conservation of natural resources.
577.27 BOT